Least Common Multiple

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Find the *Least Common Multiple* (LCM) of the numbers 900 and 210.

**Answer**

$900=({2}^{2})({3}^{2})({5}^{2})$

$210=(2)(3)(5)(7)$

The LCM of 900 and 210 is the product of the largest powers of each prime factor in both.

Thus the LCM of 900 and 210

$=({2}^{2})({3}^{2})({5}^{2})(7)$

$=6300$